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प्रश्न
Why does it become more difficult to move a magnet towards a coil when the number of turns in the coil has been increased?
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उत्तर
When a coil has a large number of turns, then magnitude of induced e.m.f. in the coil become more and then by Lenz's law it will oppose more.
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संबंधित प्रश्न
- Describe briefly one way producing an induced e.m.f?
- State one factor that determines the magnitude of induced e.m.f. in part (a) above.
- What factor determines the direction of induced e.m.f. in part (a) above?
Faraday's law is the consequence of conservation of ______
Express Faraday-Lenz's law of electromagnetic induction in an equation form.
A conductor in the form of a circular arc of the radius of curvature R subtends an angle Ø at its centre of curvature. If the current in the conduct is I, the magnetic induction at the centre of curvature is ______.
The magnetic flux through a coil perpendicular to its plane is varying according to the relation Φ = (5t3 + 4t2 + 2t − 5) Weber. If the resistant of the coil is 5 ohm, then the induced current through the coil at t = 2 sec will be ______.
Under what condition is an electric current induced in a coil?
What is \[N\Phi_B\] called, and what is its unit?
Which condition is a limitation of Faraday’s First Law or Neumann’s law?
What interaction opposes a north pole moving towards the near face of a coil?
If the magnetic field across a loop decreases to zero, what is the final magnetic flux through the loop?
